YOU SAID:

as with that alone would cause him to lose many hours upon of sleep

INTO JAPANESE

それだけで、彼は睡眠時に多くの時間を失うことになります

BACK INTO ENGLISH

That alone, he will lose a lot of time when sleeping

INTO JAPANESE

それだけで、彼は寝るときに多くの時間を失います

BACK INTO ENGLISH

That alone, he loses a lot of time when going to sleep

INTO JAPANESE

それだけで、彼は寝るときに多くの時間を失います

BACK INTO ENGLISH

That alone, he loses a lot of time when going to sleep